
PICO841 Intel
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Atom
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Processor E3845/E3827 Pico-ITX Board
AX93283 I/O Board 29
3.5.3 COM1 Connector (CN3)
CN3 is the lower connector of the double-deck DB-9 connector. Only COM1 comes with
power capability on DCD and RI pins by setting jumpers (see section 3.4.1). The pin
assignments of RS-232/422/485 are listed in table below. If you need COM1 port to
support RS-422 or RS-485, please refer to section 6.4.
3.5.4 COM2 Connector (CN4)
CN4 is the upper connector of the double-deck DB-9 connector. The pin assignments of
RS-232/422/485 are listed in table below. If you need COM2 port to support RS-422 or
RS-485, please refer to section 6.4.
3.5.5 System Power Switch (CN5)
This switch is for turning on/off the system power.
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